Rotary engine.



W N. MEARS.

ROTARY ENGINE.

APPLICATION HLED M 10. I908.

Patentefi July 6, 1915.

7 SHEETS-SHEET L V. Invenivr: W v whale/Maura b Y Wilma-sees: (SM. fXM

w. N. MEARS. ROTARY ENGINE.

APPLICATION FILED MAR.10, 1 908- Rammed July 6, 1915.

? SHEETS-SHEET 3.

QWAA.

A N MEARS. ROTARY Emmi.

APPLiCATlON HLE!) HA8. i0, i908.

w. N. MEARS.

ROTARY meme.

APPLICATION FILED MAR. 10. I908. v Li 145 153 Patented July 6, 1915..

7 SHEETS-SHEET s combustion type, wherein I may steam, air

vented an Improvement in Rotary UNITED snares Ira WILLIAM NICHOLS means,or ancestries, arassacnusnrrs, ASSIGNQB so le ma ROTARY moron COMPANY,or sosrou,

MAINE. 1

MASSACHUSETTS, A. CORPORATION OF ROTARY ENGINE.

To all/whom it may concern Be it known that 1, WILLIAM NICHOLS] Mums, acitizen of the United States, residing at' firookline, in the county ofNorfolk ind State of Massachusetts, have in- Engines, of which thefollowing description, connection with the accompanying drawings,.1s aspecification, like letters on the drawings representing like parts.

This invention relatesto rotary compressors and engines, preferably'ofthe internal employ any suitable agent or agents. If a non explosiveagent or agents be employed, 1' may utilize or other fluid underpressure, and if an explosive mixture or .mixtures be employed, I mayutilize any suitable agents,

as, for example, anexplosive mixturecf air and alcohol, or air andgasolene, or air and kerosene, or gas and in fact any suitablehydro-carbon or other agent, which, when -mixed with air other suitablefiuid,.p-roduces an explosive mixture. 7 If desired, any

suitable gas or other substance, Whether:

may be employed, which when i nited produces an explosion that.

mav be-utilized in the prodi tion or" rotary motion, or a continuously bfining-gas may plosive agent.

be employed to be with other agents of any suitable nature. I alsocontemplate the utilization of a plu rality of explosive mixtures orsubstances, as, for example, alcohol and air or acetylene gas and air,it'being apparent, however, that ifa' plurality of explosive substancesor mixtures be employed, I may jutilize an ex In the practice of myinvention, the -explosive substances, Wll'QIl'Of a pressure.

' engine,

.bodying one form fluid nature,

" In order that the v tion may lie-clearly understood, I havedisclosed asingle-type or, embodiment thereof in the accompanying drawings, whereinFigure 1 is an end elevation of a rotary preferably of an explosivetype, cm-

of my invention; Fig. 2 is a vertical central transverse section ofthe-engine represented in Fig. 1 taken upon the irregular dotted line"fl-20f Fig. 3;

,Fig. 3'is. a central longitudinal vertical sectlon thereof; F1g. 3" 4representing a construction of packing rings is a sectional detail thatmay be employed-in'zthjs type of my Specification of Letters Patent.

sentsimilar views of the same dicating the closed ports in forwardrunning of the engine preliminarytoythe reverse thereof; Figs. 13 toused alone or to be mixed are preferably supplied under principles of myinvenrotor.

invention; Fig. 3 is a Patented July 6, 1915.; Application filed Harsh10, 1908. Serial No. 420,184.

sectional detail representing the rotor as inset into the heads" Fig. 4:is a central longitudinal horizonta section thereof,- F1

senting, during the forward running of the valves respectively; Fig. 6 aslinilar view through the rotor, and representing, during the reverserunning of the engine, the admis'sion and exhaust ports and valvesrespectively; Figs. 7 to 'nclusive are vertical transverse sectionalviews taken respectively upon the lines (1. a, 5-42, and 6 -0 of Fig. 3,and

position during torward running of the en gins of the two sets ofadmission ports and the exhaust; F igs. 10 to 12inclusive repreparts butinposition of the admission representing respectively the.

g. 5 is a vertical" longi'-' tudinal section through the rotor andrepre- '15 inclusive are similar views of the same I parts butshifteclffor reversing the engine; Figs. 16 to 18 inclusive are similarviews representing the same parts in position for reverse running'of theengine, the reverse adinission ports being opened; Figs. '19 to 30inclusive are detail vertical transverse sectional views representingthe position of the gears for operating thetubular memhers or valvescontrolling the admission ports and exhaust ports, the position of saidgears corresponding in said figures to the position of the tubularmembers in Figs; 7 to 18 inclusive respectively; Fig. 31 is aperspective view of a form of packing thatmay be employed uponthe'rotor; Figs. 31

and 31* are details of portions of the ing r ng shown in 1g. 31; Fig; 32is form of means for holding .in epsition the removable Wearing faceofthe abutment or abutinents. I

Referring more particularly to that single type or embodiment of myinvention herein illustrated, the engine herein represented isprovidedwith a casing and an internal i a perspective view ofadetailrepregentingons' member, herein for convenience termed a In the practiceof my invention, I mpart a relative rotary movement to-the casing androtor.

may be impart'edto either the casing or the rotor. In the present typeof the-invention,"

however, I have'represented' the rotoras Movement of rotation mountedfor rotation within the casing, Which'herein is stationary. The. casingwherein the rotor is mounted may be of any suitable outline in crosssection, being either circular or non-circular,

as is found best adapted to the particular requirements of the type ofengine wherein my invention is employed. Reterring more particularly toFigs. 2, 3 and 4, the casing,

' circular in cross sectlon and is stationary, 1s

which herein is represented as substantially indicated at 1, it beingadapted to receive therein for rotary motion a shaft 2' mounted insuitable bearings (seeFig. 3) preferably provided therefor in the heads.Mounted within the casing 1 and keyed upon the form that is found mostdesirable, herein (see F ig. 4) I extend. opposite substantiallysemi-cylindrical portions 56 and 77 of each head into the casing 1 atopposite sides thereof, it being apparent that a portion or the wholeofeither or both heads may be re ceived within the casing or that aportion of the casing may be received within the heads. I may, incertain forms of my intention, form the heads and easing flush and insetthe rotor into the heads. 'In the preferred type of theinvention,however, I have represented .each of the heads as having aportion extending into the casing and encircling rim 8 adapted to bepositioned adjzucentthe ends of the casing. The portions 6 and 7 of theheads should, to secure the best results, be tightly fitted within thecasing where 'contacting :with the inner face thereof. Preferably theruns 8, which, for the best vided results, should be. continuous. aretightly fitted against the opposingends of the cas-- ing 1, beingsecured thereto by bolts 9 passing through said rims 8 and flangedportions 10 of the casing, the rims being drawn -into the desiredrelation with respect to the casing. p

" Villlllll each of the heads 4 and 5 is proan opening to receive theshaft 2, and

i in this embodiment of my invention I pref- 7 erably taper said openinginwardly as reprefsentcd at 11 (see Figs. and 4) and mount itherein asplit bearing ring or collar 12 "havingo 'mosite beveled ends andprovided with oiling passages 13 of any suitable constructionr Theopenings in the heads where- ...in the shaft I's mounted are providedwith en'large'dport ons internally screw threaded,

.a, represented atll, to receive'intei'nally t ,ea(led collars 15 havingbeveled portions engaging the outer correspondingly shaped portion'ofthe split rings or collars 12,

suitable construction may be and' also through the casing insubstantially the manner disclosed 1ft rnycmpending application No.lOi', Preferably, however, and in this type of myinvcntion, I introducethe motive agent or agents into the casing only through the rotor,though I desire it to be distinctly understood that I am in no wise tobe limited thereto.

The manner of introduction of the mo tive agent or agents into the rotordepends upon the speed of the engine and the nature of the said agentoragents; in some cases it being preferable to mix a plurality of agentsprior to their introduction into the; rotor, and in other cases it beingdesirable to mix them within the rotor. It is appar 'ent furthermorethat if a plurality of agents be employed, I maymix certain of. them pr]or to their introduction into the rotor and further mix the same orotheragents within the rotor. To this end, any suitable construction may beprovided. In the present type of the invention, I introduce (see Fig-I]3) a suitable motive agent through the tube or inlet 16 within the shaft2. The admission of the motive agent or agents from the inlet 16 intothe rotor and its discharge therefrom may be controlled in any suitablemanner. In the present; type of my invension Lhave for thecpurposeprovided with in the shalt? a tubular member, valve or sleeve 17receiving therein a second tubularmember, valve or sleeve 18, whichreceives therein a third sleeve, valve or tubular mem ber 19. While saidtubular members may be whereby the tubular portionl? may be held fromaxial movement. If desired, ball bear ings 24 may be provided betweenthe flange.

and nut 23. The end portion of the tubular member 17 i is hereinrepresented as provided with an outwardly directed flange portion 25with which engages a"collar '2G internally screw threaded to engage a.por tion of the tubular member a nut. '27 for that purpose. .The tubularmember 18 .1 s 1n turn 'provi ded witha flange I 18, the latter I beingherein represented as 'proi'idedwith" 50 provided to'introduce theportion 28 with which engages a. collar 29 internally screw threaded to'be received upon. the thread portion 30 of the'tubular member 19. It isapparent that any other '5 suitable means may be provided to hold the19, a collar 32 being provided to secure the same in position and totakeupwear.

I contemplate the provision of means for zo controlling the introductionof the motive" N t only agent or agents into't-he 'rotor.- may Iemploymeans for arying or regulating in anydesired manner theintroduction of the motive agentor agents however introduced into therotor, but in that type of my invention embodied'ip irreversible enginsi preferably provide means whereby,

when theengine is operative in one direction, pne .or more. of themotive agent in- 3.0' let s may be closed in whole cr in part, and,Whereby, when the engine is operative in the OppoSite'directi n,theiiilet or inlets previously closed may be opened in whole or 'inpart. While any suitable construction 3.5 may be provided to accomplishthis end, I have in the present embodiment thereof provided meanspermitting the introduction v of one or more motive agents'into therotor, preferably through a first series ofipassages herein. as shown at33 in Fig. 2, represented as opposed to each other,

being operative when the engine is operatinggin the forward directionand through [a second series of passages 34,

which, as shown in Fig.

opposed to each other, said second series being operative when theengine is reversed.

It will, of course, be apparent that one or any suitable number ofpassages may be agents through the rotor for operating the engine in theforward direction, and that one or any suitable number of passages maybe prodided to introduce the motive agent or agents when the engine .isoperating in the reverse direction.

In order to introduce the motive agent or "agents into the rotor Q Ihave proyided the shaft 2 and the tubular members 17. I8 and'19 withcertain ports represented in Figs. 2,3,4, 5, (i and 7 to .18

inclusive. In order agent or 'ngents intothe I 55 the forward driving ofthe engine, the shaft shaft 2 or cated at 45',

said series of pas the ports 4-4:

2, may be likeivise.

motive agent or and to permit the same adjacent the ports 43 is to beexhausted therethrough when desired,

.municate, as will be more to introduce the motive passages-33+,33" for2 and the tubular members 17, 18 and 19 are provided respectively withports 3535',

363(i, 37+37 and 3838, as indicated most clearly in Figs. 2, 5, 6 and 7.Preferably axially and circumferentially separatedfroni said series ofports are provided other series of .ports 3939, 40-40, 41 'l1 and42--l2, Fig. 17, whereby the motive agent or agents may be introducedinto the passages 34 for operating theengine in the reverse direction.As previously stated, any desired number of motive agents maybeintroduced into the combustion chamher or chambers.

' As. represented more particularly in Fig. "3, I contemplateintroducing one motive agent through the inlet 16, preferably axially ofthe tubular member li), and provide in the latter a plurality of checkvalveslQ and 43, as indicat in Figs. 3 and 4, said check valves being ofa y suitable type, as, for example, such as described in mysaidco-pending application No. 407,235. If 'I de-- sire to admit one or moremotive agents, in

addition to that referred-to as introduced through the inlet 16, theymaybe introduced-in any, sugable manner. Preferably,

uce a second motive-agent of the valve 42, as 1nd1- however, I introthrough theseat cated at 44, and a third motive agent through the seatof thevalve43, as indiyvhereby. if desired, the additional motive agentsmay be sprayed or 1 comminuted into fine particles by the .in-

. coming rush of the motive agents introduced through the inlet 19.introduce an additional motive-agent, it

Ifit be desired, to

may, however, be mixed in any other man ner, 'as, for example,exteriorly of the engine. It will be understood that the admis: sionof-the additional and 45 will becontrolled by suitable valyes, so thateither or both'of -said agents may be cut oil. If it be'desired tocutoil the supply of additional agents, the valves 42 and 43 would actsimply as check valves. The motive agent or a gentsintroduced throughthe rotor into the casing may be exhausted therefrom in any suitablemanner. Preferably a portion at motive least thereof is exhaustedthrough the rotor and the shaft 2. While.

any construction may be provided to accomplish this result,

herein I have rovided the-tubular member l7 (see Fig. with one or moreportst43, two being herein indicated. Asshown most clearly in Figs. 9,12, 15 and 18, the shaft provided preferably 'With ports 44, 45, 46, and.47 adapted to comfully described, with said ports 43, therebypermitting the 7 motive agent or agents: to. be exhaustedthrough thero'tor'into the shaft, and thence in the direction of -the arrojindicated in- Fig, 3 't'o any desired-point. 'Any su itable motiveagents through means may be provided tojprevent admixture of the exhaustwith the entering agent or agents. Herein, for the, purpose, I

19 as-terminating in a transverse web 48. If desired, and as'hereinrepresented, the tnbular member 18 may similarly terminate in atransverse Web 49,'thetubular member 17 being represented as havingatra'n'sverse' Web 50 intermediate its ends.

The shape of the rotor 3 lD'OIOS S section may be such as is desired.-'Preferably (see Fig. 2) it is of a general elliptical form and may be ofthe form in cross sectionfullyzd sclosed'in my co-pendlng applicationNo.

tion, the peripheral surface thneof is .provided with oppositelydisposed portions 51 and;.52 concentric with the center of rotationthereof and cut by. its :shorter axis: At...a

' peripheral pointg interinediate the concen .tric portions'51f'and '52-'and preferably so disposed as tO bB CLlt by the longer axis of therotor I provide casing contacting portio is 53 and5atwhich may be of anysuitableextent, ranging from substantially amere line contact to anysuitable area as found necessary in the particular type of enginewherein myinvention is embodied. Ifdesired, the contacting portions 53and 54 may be concentric and may in any event bepi'tovided with packingstrips 53 and 54*, as

indicated in Fig. 2, of any suitable construction. The strips 53 and 54*are recessed upon theirinner faces to reducecentrifugal action. iTh'eportions of the peripheral surface ofthe rotor intermediate the portions51, 52, 53 and 54 may be of-any preferred contour and extent.

cent concentric portions or adjacent casing contacting portions thatwhenthe abutments are in engagement with such terminal por-- tions, there isthe min mum amount of radial movement of the abutments.

'VVhen the engine is operatingin the for-' described the rotonis driven.in a forward direction. The motive agent oragents dur- In the specifictype of tially' throughthe passages iii- 34, which serve as inlets whenthe engine is reversed, sa d passages 34; being during the'forward'driving of the engine avev represented (see-Fig. 3); the' tubular memberheads. 1 Herein, for the purpose, I have provided each of the flanges 551and.

Preferably, however, the terminal portions of such intermediateportionsmerge so gradually-into the adjae 9joint, not only ingsuch-forward movement of .the rotorv fl may be exhausted either in wholeor in part. through 'the rotor.

the invention herein disclosed, when th'e engine is operating in aforward direction,- the. motive agent or'agents are exhaustedpartions'inay' be provided with similar grooves 60 and 61, wherein arereceived =weai'ing strips 62,. in COIIImUXIICQtIOH with the exhaustthroughthe-ports 4343 During the reverse driving of the 'engine,;, themotive agent or agents are introduced through the passagesB l-M and ,areex-" hausted through the passage or passages;33.

Henpe, in this ,type o'f the invention,-1n

either. direction of rotation of the engine the motive agent :or.agentsxareexha'i ste I "through the rotor. As.--,wil l be hereinafter,

.'more fully: described, Im'ay, duringcertaui' istages of-the operationandparticulafly dill?- ing'the forward worlfingfoffthe engine-per:mit'the exhaustii of' the motive agent-orig agents or aportion' thereofotherwise than 1 through the rotor. 407,235. Inthep'resent type, oftheinven it Will be observed 7-7of the heads 4 and'5 at the points Wherethe same-are provided. and with the inner surface of the casing- 1 mternediatefsuchconstruction of the rotor indicated in Fig. 2 that. Whilethe flanges .55 and 56 are c on-v centrically formed with relation tothe axis of rotation of the rotor, the extent 'of their radialprojection beyond the peripheral si1r- 95 contacting portions 53 and 54to a maximum face of therotor ranges from zero at the amount atintermediate points. I may pro- 1 inset portions. It willbe' apparentfrom the",

vide any suitable means to secure a tight fit between the rotor: and thecasing and 56 with packing rings.- Preferably Ijem ploy in each instancethree split packing rings 57, 58 and 59 received within anannular grooveprovided in such flanged portions, the .Wall' of the groove being icutwardly flared'as represented. The rings are in cross sectionsubstantially of .theshape indicated in Fig. i, the outer rings 57 and58 having outer flaring edges to be received (see Fig. 4) 109 i upon theflaring walls of thegroove and inner flaring edges to.co-act with :correspondingly flared edges of the intermediate" ring 58. It'will beapparent that'the tend-' ency of said split ring 58 is to-spring outwardand to force the split rings 57 and 59 radially outward and also towardthe Walls of the groove, thusf'maintaining a tight upon the outer faceof the anges and 56, but also at theinnerand 12,0 outer edges or cornersof the said flanges.

If desired and as herein. indicated, the, in-

iier edge of the inset portions 6 and 7 of V the heads and the portionsof the casingcircuinferei tially in line with said inset p01 strips 57,58 and with to maintain a tight. joint, 1

and as indicated at the right hand portion zthesaid packing or wearingstrips, the oil any suitable manner.

troduced to the faces of the rotor through being delivered thereto alongthe face 66 of the rotor to which it may be supplied, in

The oil maybe inthe bearings inany suitable manner. If desired and-asindicated in Fig. 4, one or both faces of the rotor may be' providedwith annular lips (57 and 68 to' prevent the pas-' sage cflubricantbeyond the packing strips and to direct the same thereto 7 While anysuitable type of abutment or abutments maybe employed, preferably inthis type of my invention, I employ a plurality of pivoted abutments,each of which has a single face adapted to contact with the peripheralface of the rotor, as fully described in my said co-pending application.Preferably each abutment, if a plurality be employed, is provided with atrunnion porpreferallylongitudinally recess or channel tion (39 receivedwithin a suitable recessed portion of thecasing, the ends thereofpr'ojecting into and being suitably mounted for oscillation withintheheads. If desired,

suitable wearing strip 70 may be interposed between the trunnion portion69 and the recessed portion of the casing. It will be apparent that theimpact upon each abutment is transmitted to and taken strip or strips70. p

I contemplate the provision of means for up by the cushioning theoutward radial movement of the abutment or abntments. While this may bedone in any suitable manner, I have herein provided recesses or chambers71 in the casing in the rear of the abutments'. The adjacent portion ofeach abutmentis preferably provided with a projection 72 adapted toenter the recess 71 and to compressv the motive agent when the abutmentis in its inner radial position. 'It is ap parent that instead ofemploying the motive agent or agents for this purpose, I may employ anysuitable cushioning fluid introduced in suitable manner. The projection72 is preferably of such extent as to leave a space between the outerface of the same and the inner wall of the pockets '71. If desired, apassage 73 suitably situated may be employed to permit the escape of thecompressed motive agent from the pocket 71. I may, if desired, employany suitable means, and herein a valve 74, to

regulate the escape of the cushioning fluid re: val thereof ifb. ofrnand for other purposes, I provide a d tachable portion which I mount inthe latter an oscillatory shoe 77 of the type fully described in my saidco' pending application. Preferably Isuitably longitudinally concave orrecess the inner face of thestrip or holder as represented, and withinthe recessed portion I mount'the correspondinglyconcaved face of thesaid shoe. To retain such shoe in operative relation to its holder whenin such position I may provide: any suitable holding means. 'Each shoeis so formed as to provide two lines of contact between the shoe and therotor throughout the period of contact of such shoe with the rotor., Tothatfend I each shoe, leaving opposite rims providing separated linesof, contact with the rotor. Preferably such shoe is so formed as to'provide two lines of contact with the rotor. Vhile the shoes 77 may be heldin position in any suitable manner 'preferably and as shown most clearlyin Fig. 32, I provide packing-or wearing strips 77 'at each end of theabutment and making suitable joint with a strip 77 along its face. Saidstrips 7 7 maybe suitably pinned to the abutment and may be insetthereinto and extend along the ends of the holder 75 and the shoe 76,which may be recessed to receive them. The recesses in the shoe may beflared as represented in Fig 32 to permit the rocking'of the shoe. Theend of each strip 77 is preferably inturned and is received in asemicircular or other suitably shapedre:

cess in the channeled portion of the rotor ontacting face of the shoe,-the inturned end of each strip being preferably rounded to conform totherecesses in the shoe. Icon template the introduction of a fluid orfluids to the rbtor contacting edge of the abutment or abutments.Preferably I introduce water at this point to remove the carbon depositfrom the interior of the engine and also to cool the walls of thecombustion chamber and to assist in the formation of steam,'thusaugmenting the motive power of the engine. It is apparent that'in theconstruction of parts indicated in Fig. 2, the abut.- ment or abutments82 are forced inward by the pressure of the exhaust upon the rearthereof. The admission of water under suitable pressure to the rotorcontacting edge of the abutment counterbalances more or less suchforward pressure upon the abut 'mentor abutments. While such water maybe introduced in any suitable manner,

preferably emplqyfor this a per-fl; tion ofthetemperature regulatingagent 'troduced'into the interior of the abutmentaf' To that end, I-haveherein represented-the abutment holder and shoe as provided with,

a passage 78 establishing communication "with the interior of theabutment and the rotor contacting edge. If desired, I may abutment, andherein to the inner face of the shoe 77, as by providing a passage orpassages 7 8 which may-lead from either sideof the-abutment, asrepresented in Fig. 2. The introduction of the motive agent or agents atthis point acts to counterbalance more or less the inward pressure uponthe abutments and also to a certain extent to lubricate the adjacentfaces of the shoe :and holder, the motive agent or agents preferablycontaining a certain proportion of lu bricanteffective for this purpose.The'ex- 'haust passes through the passage 7 3 into the compressionchamber 71 and also acts upon the angled face of the abutment adjacentsaid chamber, thereby tending to force the abutment .inward, since theareas thus acted upon exceed the'area of the,rotor contacting face ofthe abutment. w

It will be apparent that I am enabled, if desired, to avoid the use ofsprings within the engine tending to maintain the abutment or abutmentsin contact with the rotor. By

permitting the agent or agents, as, for example, the exhaust to forcethe abutment or abutments inward, I thus assistsuch mechanical agenciesas I may employ preferably eXteriorly of the engine for this pur-- pose.-I may, if desired, provide means to maintain a tight joint and to takeup wear between the abutment'or abutments and the adjacent face of thecasing. While this may a be done in any suitable manner, herein I .haverepresented a detachable strip 79 seated in a recessed portion of thecasing and having'a face'shap'ed to conform to and'eontacting with theadjacent face of the abut- Inent, said strip being here-in represented.as tapering inwardly. The strip 79 may be held in place in any suitablemanner. Herein fonthe purpose I have represented a screw 80 receivedwithin a screw threaded portionj8l of the casing, said screw having itsinnerend secured to the strip, 7 9. It will be apparent thatupon'manipulation of the said. screw, wear may be. taken up and a tightjoint maintained between the parts. I 'have, in this type of theinvention, provided means whereby, if desired, the motive agent oragents or a portion thereof be exhausted through the-abutment or -abut-I:-"

abutments are provided exhausepassagesmerits-J For that purpose I haveherein rep resented each abutment as provided with an" opening82. In therear of said abutment or 83 leading toany desiredpo-inh, Preferably, ,Iprovide means whereby said passages may be closed, thus preventing theescape of-the exhaust therethrough, in which event the exhaust will, inthis type of the inven "tion, pass through the rotor. While I'mayaccomplish this result in any suitable mam ner, herein I providetransverse partitions 84 and locate adjacent thereto suitable valves 85and 87. It is, 'of'course, appar-' cut that a single valve may beemployed or any suitable construction utilized for this purpose.

Inasmuch as, in the present type of my ini vention, the motive agent oiagents are introduced preferably through the rotor into the combustionchamber or chambers, and inasmuch as Iherein employ two passages or twosets of passages, one operative when 'the engine 18 running 1n theforward direc tion and the other operative when the engine is reversed,I provide means whereby the forward running admission ports are openedpreferably intermittently during the forward ,driving of the engine andalso provide means whereby the port or ports operative when the engineis reversed, remain closed during the forward-drive of the engine. Ialso providemeans whereby this condition is reversed during. the reversedriving'of the engine. It isapparent that this may be accomplished indifferent ways within the scope of my invention. Herein,

however, for the purpose, I have provided tubular members, valves orsleeves 17, 18

and 19 mounted within the shaft 2, said tu bular members being held fromrotation with the'shaft by means to be hereinafter more fully described.As previously stated, I have provided'in the shaft 2 and in the tubularmembers ports 35 to 38' inclusive .to

admit the motive agent or agents during th forward driving of the engineand ports 33 to 42 inclusive operative when. the engine is reversed. IIn Figs. 7 to 18 inclusive, Ihave ,represented the position of thetubular members and their passages during the forward running of theengine and also when the engine 1s running in the opposite direction andthe from forward to reverse drive.

In Fig. 2, I have indicated the relative position of the ports in saidshaft 2 and intermediate positioningduring the change ing of theengine,-it being understood that the rotor is then moving in thedirection of the arrow in said figure, so that during each rotatioiiofthe rotor each direct inlet pas sage receives the motive'agent or agents*tubular members duringthe forward drive ;through each of the ports 35,36, Wand 3S. Fig. 7 represents the said parts in the same position asshown in Fig. 2; Fig. '8 represents the position of thereverse inletports during the forward driving of the engine and Fig. 9' representsthe positionof the exhaust ports during the, forward drive.

Viewing Figs-7 and 8, it Wlil'zbB apparent that the tubular-meh1ber;,-18 is, provided with a lip 87 projectins', into the'po'rt 36in the tubular member 1 ,a B3? shifting the. tubular member 18relatively-to the tubular mem- 1 her 17, as indicated in Fig. 7,it'willbe apparent that the area oftheadmission port in the tubularmember 17 will be increased, and that by shifting the same intheopposite direction the area thereof Wlll be diminished. During theforward running of the-engine, the reverse admission ports 1 in thetubular member 17 are gclo'sed'. This v conditionis represented in Fig.8 wherein the tubular member 19 is represented as provided with a lip-88 extending through the port 41 in the tubular member 18 and into theport 46 in the tubular member'll'.

By movement of the tubular member 19 with respect to the tubular member17, it is apparent that the reverse admission ports ,insaid tubularmembers and; the shaft may be rendered operative. It isapparent that theamount of the admission through the reverse admission ports. may becontrolled 'by' theposition of the tubular member 19.

- In Fig. 9 I have represented the position of thesirha'nst ports in thetubular member 1? during the for-ward drive of the engine, it

being understood that during the forward driving-"of thefengine'theexhaust occursthrongh the ports 4% and 46..

any suitable means be provided to impart the necessary movements to thetubular members 1?, 18 and;;19.' Herein for -the-purpose (see Fig.3)Lhave represented the said'tnbnlar members as provided with i a leverarm 97 gear-s89, and 91, respectively, wherewith arewadapted to engagegears 92, 93 and 9 mounted upon a shaft 95 (see also Fig. 1)

supported in suitable bearings provided in a'bracketor brackets 96rising from theLbed of-thcengine, If desired, means may be employed tooperate the gears 9:2, 93 and 94: to shiftthe' tubularmembers 17, 18 and19. Herein for 'the purpose I have represented 4 ivoted upon the shaft95 and havinga handle 985a11dapivoted member 99 provided withla pawl 100adapted toengage the teeth of astationary ratchet 101 whereby the shaft95 they be shifted to .the r desired. extent in either direction andall) looked the desired posit-ion.

T '0' permit the engine town in the forward direction with; the ports inthe tubular member 17 fnlly opened. the lever 97 is'moved as far as;possihle to -the 'left'viewing Fig. 1. To re verse the engine, the lever9? is moved to Fig. 29.

that any suitable means may he employedthe right viewing Fig. thepivoted nieni} her 99 being cherated to retract'the rfawl" 100' so thatthe lever may be shifted teen gage the ratchet teeth at the left of theshaft 95 viewing said figure. Assuming the engine to be running in thein the several tubillar memhersand in the shaft 2 are positioned asindicated in Figs. 7, 8 and 9, and it being desired to reverse theengine, the tubular member 18 is shifted tofclose the inlet p0rts36 inthe tubular forward direction, in which event the ports member 17, asrepresented in Fig. 10."

etlect'the desired shifting of the tubular members, herein 1 haveformed' he gears 89,

.While I may employ any suitable meansto "8G 90, 92, 93 and 9% upon thetubular-members spectively, it will be apparent that/during suchshifting of the tubular n1ember18, the

positionand condition of the reverse adm'is sionj ports and of theexhaust remain-unohanged: V16W1ng Figs. 13, 14,115, and "25,

26 and 27, it will be appa-rent that all of v the tubular members 17, 18and-19 have been moved-as a unit the engagement of the segmental gearsin order to position the ex-v,

haust for reversing. flaring this'niovernentu,

the direct admission ports 36-36 remain closed and the reverse admissionports '40 as yet remain closed. Finally and .vievv- V ing 16, 17 and 18and 28, 29 and 30,

it will be apparent that 'vi'hile the direct admission ports 26-83";remain closed and. the exhaust remain. in the positionto which it isshifted. as represented in 1* lg. 15, the reverse admission ports 40- 10are opened by the-shitting of the tubular member 19 npon the continiiedmovement of the segmental gears 91 and it} as represented in It will beof course understood to reverse the engine.

Since, in this type ofmy in ention, when the engine is operating in thereverse drrec:

- tion, the exhaust may occur not only through I the rotor but alsothrough the exhaust pas sages in the abutments,- I nav introduce alarger volume of the motive agent or agents through the passages 3333fordirect driving,' and therefore in Fig. 7 and elsewhere I. haveindicated the enlargement of the inner ends of the said passagesg i-e dgso that the latter mav be in conn'nnni ation a longer period of timewith the inlet ports. Viewing '15 and 1i,.it Willbe apparent that theends-ofthe eshaost ports45 and 47, and which are operative whentheengine is operating in the reverse direction, are enlarged to permit anex- ,tended period ,of contact between said exhaust'passage sand theports in the tubular member'17, this beingdesirable in the pres- .enttype of my invention, inasmuch as during the reverse movement of theengine the exhaust occurs only'through the. rotor.

In shifting the engine from the forward drive to the reverse,inasmuch'as the exhaust I during the reverse occurs only through the vrotor, I' close the several Valves 85.2 in the an arm 10.4 to which ispivotally connected :1 link 105 pivotally connected in turn to a lug 106projecting from the gear 89 upon the outer tubular member 17, it being,apparent that upon movement of the latter gear in either direction thevali'es are opened or closed as required. Preferably, in this type of myinvention, I employ means to move the abutment or abutments toward andfrom the center of rotation of the rotor,-' this being desirable becauseof the shape of. the latter and the. fact that to permit engagement ofthe abutment or abutments' guiding compression members 112. v

and the surface of the rotor, the said abutment or'abutments mustassumedifferent radial positions. Furthermore, it is desirable toincrease ordiminish the inwardpressure upon the abutment or abutments during eachrotation of the rotor. It is a parent that these results may be accompished in any desired manner. Herein for the purpose (see Fig. 1 )"I haveindicated a cam 107 mounted upon the shaft 2, the contour of said cariiconforming substane tially tothatof the rotor. Preferably, andasindicated in Fig. 3, I employ two cams, one exterior to each headof'the engine. The. tru'nnion or trunnions 69 of the abutment orabutments (see Fig. 2) are extended through one and preferably throughboth heads of the engine. In Fig. 1, I have represented the saidtrunnions as extended through the head 5. Preferably, upon the trunnion69 exterior to one or both heads of the engine, 1 key arms 108 havingmembers 109 provided withsockets 110 wherein are received for rockingmovement relative thereto pro jectin'g portions 111 formed upon holowurrounding said member is a coil spring 113, the outer end of saidspring bearing upon a shoulder of said member as indicated; Re-

' memes.

ceived .within said guiding member is a threaded bolt 114' receivingthereon nuts 115, one of which bears upon the coil spring 113,, wherebythe tension thereof may be adjusted. The adju'stmentand construction ofthe parts may be such that the parts are in effect rigid. Said threadedbolt 11% at its inner endis forked as represented in Fig. 3 to receive apin 116 whereon ismounted for rotation a roll 117, the said roll bearingupon the periphery of the cam 107, The members 110 adjacent the sockets111 are preferably provided with lateral wings (see dotted lines Fig.1") to prevent lateral escape of the projections 111 from said sockcts.Preferably I provide means to hold the roll orrolls 117 in contact withthe cam or cams 107 and to guide the movements thereof. Herein for thepurpose I have represented links 118, the inner ends of which arepivotall'y connected to the inner ends of the" bolts 114, theopposite'ends of said links being pivotally mounted upon the head orheads, as indicated at 119 in Fig. 1. If desired, the trunnions ofthelinks 118 and the pins 116 of the rolls 117 may be hollowfor theintroduction oflubricant. It will thus be apparent that during therotation -of the rotor-and of the cam or cams 107, the abutment orabutments are rocked upon their trunnions 69 and moved'radially, so thatthey may he held in contact with the surface of the rotor.

If desired, I may introduce a temperature regulating agent into theengine. \Vhile such agent may be admitted thereinto in any desiredmanner and from any suitable source and may circulatethrough any desiredportion thereof, preferably (see Fig.

3) Iintroduce the same through a pipe 120 into a passage 121 in theshaft 2 and then conduct the same into the interior ;of the rotor, asrepresented at l22,'the said rotor having suitable passages therein forthe purpose. The peripheral flanges of" the rotor are providedwithpassages 123 and 124: for the. reception of the temperatureregulating agent. After the temperature regulating agent is withdrawnfrom the rotor in any suitable pay, as, for example, through the passage125 in the shaft 2, it thence conducted as by a pipe 12 through suchportions of-the engine as may be desired. Preferably the temperatureregu -lating agent is conducted, after passing through the rotor, intothe abutnients, through which .it traverses from left to right viewingFig. 3. It is-then conducted into the head 5 through which itcirculates, then into tlre casing, through whichit is circulatedfandthen intothe opposite head 4, through which it is circulated, itbeingfinally withdrawn and discharged in any suitable manner orrecirculated,as -more fully described in my said co-pending application. Referringmore specifically to Fig. l, the pipe 126 (see dotted lines Fig. 1) isrepresented as having portions leading to the abutments (39. Aftertraversing said abutments, the temperature regulating agent conducted,as by pipes 127, to the top of the head 5 as indicated at 128. Aftercirculating through. the head the agent is discharged from the bottomvthereof as indicated at 129 and is then conducted by suitable pipes 130to the top of the casing, as indicated at 131. After circulating throughthe casing, it is withdrawn there from at the bottom. as indicated at132, and then by suitable pipes 133, partially int icated in dottedlines in said figure, isconducted to the top of the casing st, aftercirculating Wherethrough it is discharged therefrom at the bottom, asindicatedin dotted lines at 13% in Fig. 1.

If desired and as illustrated in Fig. 3, a split ring or a segmentalmember may be inserted in grooves 136 and 137 formed respectively in thecasing l and in the heads 4 and Herein said split rings are re resentcdas tapered in cross section and are received within grooves having wallscorrespondingly shaped to receive them.

In Fig. l. I have represented means whereby a tight joint may beprovided for the operating means for the exhaust valves where the sameis received within the head or heads. Therein represented at 138 atapered sleeve split at one or more points lengthwise thereof,illustrated in dotted lines at 139 and having a screw thread end, saidsleeve heing'reccived within a correspondingly shaped socket in the headMounted upon the outer SClQ'W threaded portion of the sleeve are nuts140, by adjustment of which the tapered sleeve may he axially movedwithin its support, and thereby compressed about the spindle for saidexhaust valves. If desired and as rep resented in dotted lines in Fig. 4at 141, each abutment at one or both ends may be provided with similaror any suitable means for providing a tight joint. If desired and asrepresented in Fig. l, means may be provided to supply lubricant to theouter surface of the tubular member 17 at one or more points. Herein oneor more passages 14:2 and H3 respectively are provided leading from thebearings provided in the heads 4 and In Figs. 131. Hand 31', I haverepresented packing or wearing strips that may be provided in the rotor3. as Within the circumferential grooves provided with the flangedportions thereof. Viewing Fig. 31,

' therein are shown strips 57. and .39, which may be the same as thoseillustrated in Fig. at. If desired, said rings may be formed concentricthroughout. illustrated at the left hand side of said figure, or theymay Fig. 31, and may be provided with suitable oiling passages. Anysuitable means may be provided to connect said strips to certain of thepacking rings. Herein for the purpose I have indicated a portion lei-iprojecting from the inner face of the ring 5'? and formed integrallytherewith or attached thereto as desired, the said portion beingreceived within the channel portion of the strip 53* and connectedthereto for relative movement of said parts. as by a pin 1-15 projectingfrom the portion 1% into a slot 146 formed in the strip The opposite endof the strip 5% may be connected in a simi-. lar manner to the innerface of the right hand ring The opposite end of the strip ,53 may be'operatively connected in any desired manner with one or more of theright hand packing rings represented in Fig. 31. Herein, for thepurpose, I have represented a member 147 received Within the oppositeend of the channel strip 53* for relative movement thereim as by a pinand slot connection HS. Said member 1%? projcts between the split endsof the left hand ring 59. as indicated more fully'in Fig. 31*, and isprovided with javvs 148 and 1&9 embracing the upper and lower faces ofthe intermediate ring If desired, and as represented in Fig. 31. theopposite or left hand end of the strip 5i may be provided with a similarmember 150 engaging the intermediate left hand packing or n caring ring58. It will be apparent that by providing members, such as hereindescribed, for connecting two sets of packing rings, movement of thelatter circumferentially of the rotor is prevented.

In Fig. 3, I have represented a construction of packing rings preferablysplit and either entire or segmental that may be employed in connectionwith this type of my invention, the said rings 151 and 152 con formingsubstantially in construction to the packing rings shovvn in myco-pending ap plication No. 407,235. If desired, and as illustrated, Ialso provide similar rings 153 and lfil mounted in the casing andcooperating with the rings 151 and 152 to maintain a tight joint and totake up wear.

In Fig. 5' I have represented a construction wherein the rotor 3,preferably flanged as indicated 155, is inset into the heads, which forthat purpose are suitably rece "ed. as indicated 3 itable pecitmg andwearing strips may be employed in this type'of my inventiom'as, forexample, thepacking strips represented in Fig. 31 or .those representedin Fig. 3; Herein I have represented strips 157, 158 and 159 mounted ina suitable peripheral groove in the flanged portions or saidrotor andstrips 1(50, 161 [and 162 mounted in an inner peripheral the rusting ofthe iron or steel in any suit-- able manner, as by coppering, tinning,platin ,etc. aving thus described one type or embodiment of myinvention, I desire it to be mounted therein and said rotor portions,

understood that although specific termsare employed, they are used in ageneric and descriptive sense and not for purposes of set forth in-thefollowing claims.

. Claims: v s 1; A rotary engine comprising a casing and a relativelyrota'tablerotor mounted limitation, the scope of the invention beingtherein and provided vith a shaft, means-- for introducing a motiveagent or agents shaft, and means forexhausting said agent or agentsthrough the opposite end of said shaft, and means to change the point ofad:

mission of them-otive agent or agents.

i Elm k rotary engine comprlsing a casing and a relatively rotatablerotor mounted therein andprovided with a shaft, said r0- tor havingopposite casing contacting portions, means for introducing a motiveagent or agents into the casing through said shaft and through the rotorfaces of said opposite portions, thereby to balance the rotor, and

means for exhausting said agent or agents through said shaft.

3. A rotary engine comprising a'casing and a relatively rotatable rotormounted therein and provided with a shaft, said rotor having oppositecasing contactingpon, tlons, means 7 or agents into the casingthrough'the rotor at the faces of .said opposite rotor portions, andmeans for exhausting said agent or agents through said opposite rotorportions.

4. r reversible rotary engine comprising a using, andfia relativelyrotatable rotor provided with a shaft, having opposite casing contactingmeans for. introducing a motive agent or agents into the casing throughthe rotor faces of said opposite portions. means for exhausting. themotive agent or agents axially through the rotor, means for reversingthe engine, and means for changing the course of the exhaust through therotor upon reversal of'the engine.

tive agent or agents, means permitting the ing a portion at least ofsaidagentor-agents axially of the rotor.

8. A rotary engine comprisingacasmg and agent or. agents through therotor and for introducing amotive agent mounted therein and providedWith a shaft, 7 sa d rotor havlng'opposite casing contacting rotor facesof said opposite portions, there- 5. A rotary engine comprising acasing, a relatively rotatable rotor mounted there in, a shaft for said.rotor, means for introducing a motive agent-or agents into said casingthrough one end ofsaid shaft, means for changing the point of admissionfor said motive agent or agents, and means pernntting the exhaust ofsaid'agent'or agents through the other end of said shaft in eitherdirection of operation of the engine; 6. A rotary engine comprising acasing and a relatively rotatable rotor mounted therein, means forintroducing a motive agent or agents into said casing, means forchanging the point of admission of said moso exhaust of said agentoragents axially of the rotor and extraneously thereto, and

means within the rotor for controlling the passage of the exhaust.

7. A rotary engine comprising acasing and a relatively" rotatable rotormounted therein and provided with a shaft, said ro tor having oppositecasing contacting poi tions, means for introducing a motive agent oragents into the casing through said shaft and'through the rotorfaces ofsaid opposite portions, thereby to balance the rotor; into .the casingthrough one end of 531d an abutment or abutments mounted for movementtoward and from the center of rotation of the rotor, and means forexhausta relatively rotatable rotor. mounted therein, an abutmentor abutments mounted for moveinent toward and from'the center of rota- 'tionof the rotor, means for introducing a motive agent or agents into thecasing, and means permitting the exhaust of the motive through saidabutment or abutments.

9. A rotary engine comprising a casing Y and a relatively rotatablerotor mounted therein, an abutment or abutments mounted for'movementtoward-andv from the center of'rotation of the rotor, means forintroduclng a motive agent or'agents into the casing,- mean s.permitting the exhaust ofthe 1notive agent or agents through ,the' rotorand through said abutment or abutments, and means controlling the'exhaust through either or both the rotor and abutment or abut-' ments. I

10. A reversible rotar engine comprising a casing and a relativelyrotatable rotor 120 portions, means 'for introducing a .motive agent oragents into the casingthro'ugh the i 125 by to balance the rotor, meansfor exhausting the motive agent'or agents through the rotor, means forreversing. the engine, .and

i the rente i rotation of the rotor, said she?- ng the course of the entherein and provided with e'shaft, said rotor ke rotor upon reversal ofhaving opposite easing contesting portions,

' means for introducing a motive agent or is rosry engine comprisingagents into the casing through the rotor at relatively rotetehie rotorthe faces of said opposite rotor portions, herein, said rotor having oneand means for exhausting said agent-or iniet passages therein forinagents through the shaft.

motive force into the casing 17. A rotar engine comprising a casing iorthe forwnrddriving of the engine, and and a relatively rotatable rotormounted sneer more inlet passages for introducing therein, means foradmitting motive force motive force into the casing for the reverse intothe casing, means for exhausting motive driving of the engine, one ormore of said agenry through the rotor, and also extrainlet nessagesacting as an exhaust passage neously thereto, and means for closingeither or passages when the engine is running in of said exhausts. 15the opposite direction. 18. A rotary engine comprising a casing 12 Areversible rotary engine comprising and a relatively rotatable rotormounted s. easing and a relatively rotatable rotor therein. means foradmitting motive force mounted therein, said rotor having one or intothe casing. means for exhausting motive i more inlet passages thereinfor introducing agency through the rotor and also extrarnotive forceinto the casing for the forward neously thereto, and means for closingsaid of the engine, and one or more inlet latter exhaust. passages rorintroducing motive force into 19. A rotary engine comprising a casingtire casing tor the reverse driving of the enand a relatively rotatablerotor mounted ine, and provisions whereby during the fortherein, meansfor admitting motive agent 25 driving of the engine the motive forceinto the casing. means for exhausting motive is exhausted through therotor and also exs agency through a plurality of exits in the traneouslyto the rotor, and whereby during. rotor, and means for chzlnging thepoints of the reverse driving of the engine the motive exit. forceexhausted through the rotor. 20. A reversible rotary e'ngine comprising.fi/ 13. A reversible rotary engine eoinprising a casing and arelatively rotatable rotor a casing and :1 relatively rotatable rotormounted therein, means for admitting momounted therein, one or moreswinging alouttive force into the casing. and one or more merits mountedfor movement toward and non-reversible pivoted abutments adapted to fromthe center of rotation of the rotor, and r i imp of motiw W p opp meanswhereby motive force r." be introportions, whereby the engine may hedriven dueed through the rotor to e. i word face or the exhaust face ofthe ahutthr g therotorment or ahutments, thereby to drive the en- 21. Arotary engine comprising a casing V gins in a forward or a reversedirection. and a relatively rotatable rotor mounted so 1%. A reversiblerotary engine comprising. therein, and a pluraiitv of tapered valves ncasing and a relatively rotatable rotor Within the rotor and nxiallvthereof for admounted therein, one or more ahut'ments pivu'iittingmotive agent into the casing and for oted forconjoint movement towardand varying the amount of motive agent adr-onjoint from the center ofrotation of the initted therethrougzh and means f r chang-- on rotor andadapted eontaet with no inn the point of ndmission of the motive ripherythereof, and provisions whei nioforce. tive force may he introdured to.either the A rotary engine comprising a Casing "Forward face or theexhaust face oi"- the and a relatively rotatable rotor mounted abutmentor oli-utinents. thereby to drive is IL z TOW)! h ing 3 n ity of eng'inein a forward or a reverse dire v se zes therein for introduring motive15. A reversible rotary engine compi'i ing agent into the easing:axially of the rotor a easing; and a relmive'v rotatable r tor ul' theforward driving of the engine and mounted therein. one or more lmt mulsn having a pluralitvo't passages for exmounted for movement towardand from liausting the motive agent therethrough axially of the rotor.meet or metments having provisions i'or-tiir A reversible rotarv engineeomprisin ercliau of motive forro there-through, and :1 raising and arelativelv rotatanle roto? oils fvvherehumotive force. may he inmmintedtherein, and nested (o-axial means fr motive force into the t and forthe reverse driving of l s e. and means for changing the 1 dinission ofthe motive force.

1 rev rsihle rotary engine comprising and; e relatively rotateble. rotoriliflllffll the rotor to either the for mlmitii hire or the exhaust faceof for thed rc ient or ahntments. thereby toalrive none in a iorwurd ora revert direction.

, I. rotary engine comprising a o .ted

and a reletiveij; rotatable rotor o f rin either direction and means toexhaust 100 mounted therein, and nested means inside the engine foradmitting motive agent into the casing for the direct and for thereverse driving of the engine and for the exhaust of the motive force,and means for changing the point of admission or the motive ijorce.

A rotary engine comprising a casing and a relatively rotatable rotormounted therein, and one or'more nested tapered valves in the rotor forcontrolling the admission of motive agent into the casing and theexhaust of motiveagent therefrom, and

means for changing the point of admission of the motive force.

26. A rotary engine comprising casing and a relatively rotatable rotormounted therein, and nested means Within the casing for controlling theadmission of motiveagent into the engine and for exhausting motive forcetherefrom at that side of the engine opposite the admission side.

27. A rotary engine comprising a casing and a relatively rotatable rotormounted thereimmeans for admitting motive agent into the casing and-forexhausting it'therefrom, said rotorhaving circular flanged ends, andannular packing strips for said flanged ends presenting an acute. angleat.

the meeting edges of the rotor and casin 28. A rotary engine comprisinga casing and a relatively rotatable rotor mounted thereima tapered valveWithin the rotor for admitting motive agent into the casing, andplurality of tapered sleeves between the valve and the rotor for varyingthe amount of motive agent admitted through said valve.

29. A rotary engine comprising a casing and a relatively rotatable rotormounted therein and provided with a shaft, means for introducing amotive agent or agents into the casing through one end of thejshaft,

means for exhausting said agent or agents through'the opposite end ofsaid shaft, and means .to change the point of exhaust tor said-agent oragents;

30. A rotary engine comprising a casing ;anda relatively rotatable rotormounted thereinfa tapered valve Within the rotor for admitting motiveagent into the casing,

and a sleeve between the valve'andthe rotor for varying the'amount ofmotive agent ad- 7 agents" into the casing, and means for cx-- mittedthrough said valve and for reversing eand sleeve being fcir I theengine, said v I cumferentially movable-to change the point of admissionof the motive agent 31. A rotary engine comprising a casing and arelatively rotatable rotor mounted; therei'nand peripherally flanged atits ends, means for. introducing a' motiveagent or .hausting a portionatvleast of said motive agent or agents through the rotor,

32..A rotaryengine comprising a casing and a relatively rotatable rotormounted.

and the inside of said casing, said strip or strips being rotatable withthe rotor.

34. A rotary engine comprising a casing and a peripherally flanged,relatively-rotatable rotor mounted therein, and an expansible cornerpacking or wearing strip or strips mounted in said flanged portion orportions and positioned at the meeting point:

of the inner face of said flange or flanges and the inside ofthe-casing, whereby said casing and flanged rotor meet at a right angleor right angles.

i I 35. A rotary engine COmPI'lSlIlg-fi cas ng and a relativelyrotatable, peripherally flanged rotor mounted therein, the flangedportion or portions of said rotor being provided with a plurality oflaterally disposed packing or Wearingst rips, one of said strips beingpositioned at the meeting pointof the innerface of said'flange orflanges and the inside of the casing, whereby said casing and flangedrotor meet at a angle or right angles.

4 36. A rotary engine comprising a casing and a relatively rotatable,peripherally flanged rotor mounted therein, the flanged portion orportions of said rotor being prostrips packing the contacting edge ofthe flange of the rotor and said casing and carried by said rotor.,

3T. A'rot a'ry engine comprising a casing and a relatively rotatable,peripherally flanged rotor mounted therein, the peripherally flangedportion or portions of said rotor being provided with a peripheral rerotor, said recesses being tapered in cross section.

38'. A rotary engine comprising a casing and a relatively rotatable,peripherally flanged rotor mounted therein, said rotor having a pair ofopposed concentric poitrons noncontacting with the casing andintermediate said portions a pair of easing contacting portions, theintermediate portions of said rotor merging gradually into theconcentric and the casing contacting portions thereof.

89. A rotary engine comprising easing, a relatively rotatable rotormounted therein,

packed packed rightvided with one or more packing or wearing stripstapering in cross section, one of said 'cessor recesses for thereception of. packing r or Wearing strips, and a packing or Wearingstrip or strips therein and carried by said an abutment or abutmentsmounted for irovenient toward and from the center of rotation oftherotor, means for introducing a motive agentor agents into the casing andmeans for introducing a portion thereof Ween the rotor contactingoperative edges said abutment or abutments. i A I'Oilflrff enginecomprising a casing no. a relatively rotatable rotor mounted he 'ein, anabutment or abutments mounted hecasing. and adapted to contact with .heperipheral surface of said rotor. means for introducing a motive agentor agents into the casing, and means for intr (lacing a portion thereofto that edge or edges of said abutment or abutments that contact withthe rotor.

4-1. A. rotary engine comprising a casing: a relatively rotatable rotormounted e ein, an abutment pivoted in the casing in ha ring spaced edgesadapted to contact with the peripheral surface of the rotor. and meansfor introducing a motive agent or agents between said spaced edges.

A rotary engine comprising a casing ind a relatively rotatable rotormounted herein. an abutment mounted for movement toward and from thecenter of rotation of the rotor and having spaced edges adapted tocontact with the peripheral surface of the rotor. means for introducinga temperature regulating agent into said abutment or abut- .d means ford' barging a portion n ten'iperature regulating agent bel spaced edgesof said abutment. rotary engine comprising a casing relatively rotatablerotor mounted an ul'uitinent having spaced edges to with the}';eripheral surface of the means for introducing temperature agent intothe abutment. and i i a portion of such in. agent between the esthereof. engine comprising a casing ',.c. v rotatable rotor mounted anhutment or abutments'inounted ate with the casing and the rotor, orabutments having a de for introducating agent into the and means fordis- ,nng a portion of and temperature regulatina agent to the rotorcontacting edge of such detachable wearing face.

i A engine comprising'a casing and a. relatively rotatable rotor mountedtherein, means for admitting motive force into the casing and forexhausting it therefrom. said rotor having circular flanged ends andannular packing strips in said fiantzed ends presenting an acute angleat the ineetinfz edges of the rotor and easing.

5&6. A rotary engine comprising a casing,

," a shaft mounted 'ithin the casing and having a rotatable rotorthereon. said rotor having a plurality of opposed 1 issages foradmittingz motive agent theretiu-ough. and a plurality of opposedpassages for exhaustin motive agent iherethrough. tiurehv to balance therotor.

47. .a rotary enffine co nprisin; a casing and a relatively rotatablerotor mounted therein. means for admitting: motive force into thecasing: and for exhausting it therefrom. said rotor havin; circularflanged ends and annular packing. strips received in said flanged endsot'the rotor and presenting an acute angle at the meetinncdges ot therotor.

A rotar and relatively therein. means into the casing from. said rotorhaving circular fian zed ends. annular packing strips for said flangedends presenting an acute angle at the meetin; edges of the rotor andasing, and connections between said annular packing strips.

.49. A rotary engine comprising a casing and a. peripherally flanged.rotatable rotor mounted therein and a packing or wearing strippresenting an acute angle at the meeting' point of the inner face ofsaid flange or flanges and the inside of the casing.

50. A rotary engine con'iprisinsz in combination a casing, a relativelyrotzitable rotor mounted therein, an abutment having a rotor contactingface provided with a removable shoe and one or more packing strips atthe head contacting end or ends of said abutengrine comprising a casingrotatable rotor mounted tor admitting motive. force and for exhaustingit therement and having angled portions presenting a corner packingbetween the abutment, the rotor and the head, and engaging the -face ofsaid shoe.

51. A rotary engine comprising a casing, a shaft mounted thereincarryingga rotor, means for introducing a moth; agent through said shaftinto the casing. a check. valve or valves Within said shaft controllingthe admission of said motive agent, and

means for introducing one or more additional motive agents into saidshaftadjacent '115 said check valve or valves.

A rotary engine comprising erasing,-

a rotatable rotor mounted therein, an abutment or abutments mounted inthe casing and adapted to contact with the peripheral surface of saidrotor, a cam mounted exteriorly of the casing and adapted to move saidabutment or abutments in conformity with the movement of said rotor,said abutment or abutments having amember connected thereto and adaptedto'bear uponsaid cam, guiding means for said member, yieldingconnections between the cam and the abutment or abutments, and means toregu- 'late the tension of said yielding means.

58. A rotary engine comprising a casing,

